Update the LICENSE and README file to reflect that the project IP transfer from Samsung to the JS Foundation has been completed.

JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com

Previously only a copy of the Apache License 2.0 header (for inclusion into source files) was distributed as part of the sources.

JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com

* LICENSE needed year update.

* The asm component of the posix target of jerry-libc had no
  copyright & license notice since it has been introduced in 2015.
  Traced back history and added missing header with correct years.

* Three tests in jerry/fail/1 also missed header. Added.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

Upon receiving 'give some memory back' request check if any corresponding callback set instead of asserting that.